<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style type="text/css"></style>
</head>
<body>
    <div class="outer">
        <div id="b1">
            &nbsp;&nbsp;
            <font color="red" size="4">●</font>
            <font color="blue" size="4">●</font>
            <font color="green" size="4">●</font>
        </div>
        <div id="b2"></div>
        <div id="b3">
            <div>AC</div>
            <div>+/-</div>
            <div>%</div>
            <div>/</div>
            <div>7</div>
            <div>8</div>
            <div>9</div>
            <div>*</div>
            <div>4</div>
            <div>5</div>
            <div>6</div>
            <div>-</div>
            <div>1</div>
            <div>2</div>
            <div>3</div>
            <div>+</div>
            <div>0</div>
            <div>&nbsp;</div>
            <div>.</div>
            <div>=</div>
            
        </div>
    </div>
    
</body>
</html>